The documentation [0] includes the alert "FluentdQueueLengthIncreasing" in the vector alerts section. This alert is specifically designed to trigger when there is a buffer in Fluentd. It is important to note that the "FluentdQueueLengthIncreasing" alert pertains solely to Fluentd and is not associated with the vector component.

Therefore, it is recommended to exclude the "FluentdQueueLengthIncreasing" alert from the vector alerts documentation.

For more details, please refer to [0]: https://docs.openshift.com/container-platform/4.12/logging/logging_alerts/default-logging-alerts.html#logging-vector-collector-alerts_default-logging-alerts